Taxon - Odkazy a literatura
Cystophora Nilsson, 1820 - čepcol
The Interim Register of Marine and Nonmarine Genera [1344270]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Cystophora Nilsson, 1820]
Datum citace: 30. listopad 2019
Paleobiology Database [36913]
Paleobiology Database [https://paleobiodb.org/] [jako Cystophora Nilsson, 1820]
Datum citace: 11. prosinec 2015
Cystophora cristata (Erxleben, 1777) - čepcol hřebenatý
de Jong, Y.S.D.M. (ed.): Fauna Europaea 2.4 [http://www.faunaeur.org] [jako Cystophora cristata (Erxleben, 1777)]Datum citace: 9. březen 2012
Wilson D. E., Reeder D. M. (editors) (2005): Mammal Species of the World (MSW). A Taxonomic and Geographic Reference (3rd ed) [http://www.bucknell.edu/msw3] [jako Cystophora cristata Erxleben, 1777]Datum citace: 5. prosinec 2008
IUCN Red List of Threatened Species 2024-1 [6204]
IUCN Red List of Threatened Species [http://www.iucnredlist.org/] [jako Cystophora cristata (Erxleben, 1777)]
Datum citace: 29. leden 2024
ASM Mammal Diversity Database 2.1 [1005911]
ASM Mammal Diversity Database [https://www.mammaldiversity.org/], American Society of Mammalogists [jako Cystophora cristata (Erxleben, 1777)]
Datum citace: 29. květen 2025
Paleobiology Database [80720]
Paleobiology Database [https://paleobiodb.org/] [jako Cystophora cristata (Erxleben, 1779)]
Datum citace: 3. březen 2016
ARKive [/hooded-seal/cystophora-cristata/]
ARKive [http://www.arkive.org] [SKRYTO]
Datum citace: 16. prosinec 2010
Anděra M. (1999): České názvy živočichů II. Savci (Mammalia), Národní muzeum, (zoologické odd.), Praha, 147 pp. [jako Cystophora cristata (Erxleben 1777)]